User interface for a display screen



FIG. 1 is a front view of a user interface for a display screen showingmy new design; and,

FIG. 2 is an enlarged front view thereof, the user interface is shownseparately for clarity of illustration.

The broken line showing of the display screen in FIG. 1 and the elementsin FIGS. 1 and 2 forms no part of the claimed design.

The ornamental design for a user interface for a display screen, asshown and described.